Option to set the vertical and horizontal pieces will show up when the game starts. Game will begin with the number of pieces you have chosen and it would all be black pieces. Your goal is to flip all the black pieces to white pieces. Number of moves you make is recorded and 50 points gets reduced for every move you make. You'll get 25,000 points in total to begin with. You can restart the game anytime by pressing the restart button on the top left corner. Once you become a pro then change the number of pieces to play the game on a bigger board.